JP4934878B2 - Chair - Google Patents

Description

本発明は、着座者の立上り動作を補助する機能を備えた椅子に関するものである。   The present invention relates to a chair having a function of assisting a seated person to start up.

足腰の弱った者や膝・足の自由が利かない者のために、近時、座椅子のように安息状態で着座した姿勢から着座者が立ち上がるまでの動作を補助する椅子の開発が進められている。   For those with weak legs and knees and legs who are not free, recently, the development of a chair that assists the movement of the seated person from the seated position, such as a sitting chair, has been promoted. It has been.

このような椅子を実現するためには、少なくとも背座を昇降動作させる機能と、通常姿勢から背をリクライニングさせる機能を備えればよく、そのためには、昇降駆動用のアクチュエータと、リクライニング用のアクチュエータとを搭載し、昇降時に一方のアクチュエータで背座全体を上下動させ、リクライニング動作時に他方のアクチュエータで背の上部を後方へ倒すようにすれば、一応の目的は達成することができる。しかしながら、これだとアクチュエータが多いために構造の複雑化やコストアップが避けられず、また背の上部が後方に倒れると後方に動作しろが必要となって椅子の配置や椅子の後方通行等に支障が生ずることが多くなる。   In order to realize such a chair, it is sufficient to have at least a function of moving the back seat up and down and a function of reclining the back from a normal posture. For that purpose, an actuator for driving up and down and an actuator for reclining Can be achieved by moving the entire back seat up and down with one actuator during lifting and lowering the upper part of the back with the other actuator during reclining operation. However, this increases the complexity of the structure and increases the cost due to the large number of actuators, and if the upper part of the back is tilted backwards, it is necessary to move backwards, which makes it difficult to place chairs or pass the chairs behind. It often causes trouble.

そこで、例えば特許文献１に示されるように、１つのアクチュエータで背座の昇降動作と背座のリクライニング動作とを同時に実現し、そのリクライニング動作も背の上部を後方に倒さずに行えるようにしたものが開発されている。   Therefore, for example, as shown in Patent Document 1, a single actuator achieves the back-and-forth movement of the back seat and the reclining operation of the back seat simultaneously, and the reclining operation can be performed without tilting the upper part of the back backward. Things are being developed.

このものは、固定背部に設けられて所定方向に昇降動作する作動体を有するアクチュエータ及び固定背部に沿って昇降可能な支持体を備え、背の上部背面に取り付けた可動軸を支持部材の上端に設けた長孔に挿し通して前記作動体に上下駆動可能に接続するとともに、その可動軸の下方において背の背面に設けたブラケットの長孔を支持部材に設けた固定軸に係り合わせている。また、支持体には前方に案内枠体が突出して設けられ、この案内枠体に移動枠体を介して座を支持させて、背の下部を連結部材を介して案内枠体の後部に接続している。   This is provided with an actuator provided on a fixed back and having an operating body that moves up and down in a predetermined direction, and a support that can be moved up and down along the fixed back, and a movable shaft attached to the upper back of the back is attached to the upper end of the support member. The long hole of the bracket provided on the back surface of the back is engaged with the fixed shaft provided in the support member below the movable shaft. In addition, a guide frame body is provided on the support body so as to protrude forward, and the seat is supported on the guide frame body via the moving frame body, and the lower part of the back is connected to the rear portion of the guide frame body via the connecting member. is doing.

しかして、作動体が所定位置よりも上方にあるときは、可動軸を介して背が上下駆動され且つ支持体が長孔を介してこれに連動して昇降するとともに、連結部材や案内枠体、移動枠体を介して座も上下駆動される結果、背座の昇降が実現される。一方、作動体が所定位置よりも低くなると、可動軸が長孔内を遊動しつつ、背を介してブラケットが下方に押し下げられ、このときブラケットの長孔と固定軸の係り合い位置が変化する。そして、そのブラケットの長孔は予め斜めに切ってあり、これによりブラケットが前方に押し出され、その結果、背全体が後傾するようにしている。そして、背の下端に設けた連結部材が先方に押し出され、これにより移動枠体が案内枠体に沿ってスライド移動する結果、座の前動と背の後傾とが連動して、リクライニング動作が実現されるようにしている。
特開平７−６７７３９ Thus, when the operating body is above the predetermined position, the back is driven up and down via the movable shaft, and the support body moves up and down in conjunction with this through the long hole, and the connecting member and the guide frame body. As a result of the seat being also driven up and down via the moving frame, the back seat is raised and lowered. On the other hand, when the operating body becomes lower than the predetermined position, the bracket is pushed downward via the back while the movable shaft is floating in the long hole, and at this time, the engagement position between the long hole of the bracket and the fixed shaft changes. . And the long hole of the bracket is cut diagonally beforehand, so that the bracket is pushed forward, and as a result, the entire back is inclined backward. Then, the connecting member provided at the lower end of the back is pushed forward, and as a result of the sliding movement of the moving frame body along the guide frame body, the forward movement of the seat and the back tilt of the back are interlocked, and the reclining operation Is to be realized.
JP-A-7-67739

しかしながら、かかる特許文献のものは、背の上端近傍の狭い範囲で背全体に後傾動作を与え、この背からさらに連結部材を介して座を同期して前動させるようにしているので、作動体の動作をもって背座のリクライニング動作をスムーズに引き起こすことに相当無理のある構造であり、しかも、可動軸と長孔の係り合い部分、あるいは固定軸と長孔の係り合い部分に局所的に過大なモーメントが作用するため、所要の剛性を確保することが困難になる事態も考えられる。   However, in this patent document, since the whole back is tilted in a narrow range near the upper end of the back and the seat is further moved forward synchronously via the connecting member from the back, It is a structure that is quite unreasonable to cause the reclining movement of the back seat smoothly with the movement of the body, and it is locally excessive to the engagement part of the movable shaft and the long hole, or the engagement part of the fixed shaft and the long hole It can be considered that it is difficult to ensure the required rigidity because of a large moment acting.

本発明は、このような課題に着目してなされたものであって、１つのアクチュエータでも背座の昇降動作及びリクライニング動作を剛性を損なうことなくスムーズに実現することができ、背の後傾時にその上部が後方へ張り出すことも適切に回避できるようにした新規有用な椅子を提供することを目的としている。   The present invention has been made paying attention to such a problem, and even with a single actuator, it is possible to smoothly realize the raising / lowering operation and the reclining operation of the back seat without impairing the rigidity, and when the back is tilted backward. An object of the present invention is to provide a new and useful chair in which the upper portion can be appropriately avoided from projecting backward.

本発明は、かかる目的を達成するために、次のような手段を講じたものである。   In order to achieve this object, the present invention takes the following measures.

すなわち、本発明の椅子は、固定背部に設けられて所定の反復動作のみを行う作動体を有する単一のアクチュエータと、前記作動体に一部を取り付けられた剛体とを具備してなる。そして、この剛体は、作動体が所定位置よりも上方で動作する際は作動体とともに全体が所定方向に移動して背座を昇降駆動し、作動体が所定位置を越えて降下する際は他の一部を前記所定方向とは異なる方向に揺動させつつ座及び背の下部を移動させ、これにより座の前動と背の後傾動作とが連動したリクライニング動作を行わせるようにした椅子であって、
前記固定背部に昇降部材を介して座及び背を取り付け、前記昇降部材が、固定背部に沿って昇降可能な支持体と、支持体から前方へ突出する案内部と、座を取り付けた状態で前記案内部に沿って前後スライド可能な移動体とを備え、作動体に一部を取り付けた剛体の他の一部を移動体若しくは座並びに背の下部に関連づけ、背の上部を前記固定背部に揺動可能に関連づけていることを特徴とするものである。 That is, the chair of the present invention includes a single actuator having an operating body that is provided on the fixed back and performs only a predetermined repetitive motion, and a rigid body that is partially attached to the operating body. The rigid body moves in a predetermined direction together with the operating body when the operating body operates above a predetermined position to drive the back seat up and down, and when the operating body descends beyond the predetermined position, chair part is moved at the bottom of the seat and the back while swinging in a direction different from the predetermined direction, and thereby so as to perform the reclining operation before moving and in which the spine after tilting operation is linked loci Because
A seat and a back are attached to the fixed back via an elevating member, and the elevating member is supported with a support that can be raised and lowered along the fixed back, a guide that protrudes forward from the support, and a seat attached thereto. A movable body that is slidable back and forth along the guide part, and another part of the rigid body attached to the operating body is associated with the movable body or the seat and the lower back part, and the upper part of the back is rocked to the fixed back part. It is characterized by being linked in a movable manner.

このように構成すると、単一のアクチュエータの単純な反復動作のみで背座の昇降動作及びリクライニング動作という２つの動作を実現できるので、複数のアクチュエータを用いる場合に比して、構造の簡素化及びコストダウンを有効に図ることができる。しかも、背の上部を後方に移動させるのではなく、背の下部を前方に移動させることによってリクライニング動作を実現するようにしているので、背が後方に大きく張り出すことも回避することができる。その上、剛体は作動体に駆動されて他の一部を揺動させながら座及び背の下部を移動させるので、背の上部付近のみで背の後傾動作を引き起こしこれに座を連動させて前動動作させる構造に比して、作動体の動作で背座のリクライニング動作をスムーズに引き起こすことができると同時に、トルクアームを十分に大きくとって、局所的に過大なモーメントが作用することを有効に回避することが可能となる。また、剛体の他の一部を移動体に取り付け、この移動体を案内部に沿って移動させるようにしているので、剛体の揺動動作ひいては座の前動及び背の後傾動作を一義的にスムーズに行わせることができ、その結果、所定方向に動作する作動体で背及び座のリクライニング動作を更に円滑に引き起こすことができる。 With this configuration, since the two operations of raising and lowering the back seat and the reclining operation can be realized only by a simple repetitive operation of a single actuator, the structure can be simplified and compared with the case of using a plurality of actuators. Cost reduction can be effectively achieved. In addition, since the reclining operation is realized by moving the lower part of the spine forward rather than by moving the upper part of the spine backward, it is also possible to prevent the spine from greatly protruding backward. In addition, the rigid body is driven by the operating body and moves the lower part of the seat and back while swinging the other part, causing the back tilting action only near the upper part of the back, and interlocking the seat with this Compared to the structure that moves forward, the action of the operating body can cause the reclining motion of the back seat smoothly, and at the same time, the torque arm must be made large enough to apply an excessively large moment locally. It can be effectively avoided. In addition, the other part of the rigid body is attached to the moving body, and this moving body is moved along the guide portion. Therefore, the swinging motion of the rigid body, and hence the forward movement of the seat and the backward tilting motion of the seat are unambiguous. As a result, the reclining operation of the back and the seat can be caused more smoothly by the operating body that operates in a predetermined direction.

背座の昇降動作を強度を損なわずに安定して行うためには、剛体に、作動体とともに所定方向に動作する際は２箇所で背座を支持させ、揺動動作する際は一部を背座から切り離し他の一部を前記所定方向とは異なる方向に移動させて座及び背の下部を前後に押し引きさせるように構成しておくことが望ましい。 In order to perform the raising / lowering operation of the back seat stably without losing strength, the rigid body supports the back seat at two places when operating in a predetermined direction together with the operating body, and a part when swinging. It is desirable that a part separated from the back seat is moved in a direction different from the predetermined direction so that the seat and the lower portion of the back are pushed back and forth.

より具体的には、剛体は、作動体とともに所定方向に動作する際は中間部で昇降部材の支持体に係り合うとともに下端部を移動体若しくは座並びに背の下部に接続されて背座を２箇所で支持し、揺動動作する際は中間部を昇降部材の支持体から切り離して下端部を前記所定方向とは異なる方向に移動させることにより、座及び背の下部を前後に押し引きし、その際背の上部が固定背部に揺動可能に関連づけられていることにより背を傾動させ得るように構成しているものが挙げられる。 More specifically, when the rigid body moves in a predetermined direction together with the operating body, the rigid body engages with the support member of the elevating member at the intermediate portion, and the lower end portion is connected to the moving body or the seat and the lower portion of the back so that the back seat 2 When supporting and swinging, the intermediate part is separated from the support member of the lifting member and the lower end part is moved in a direction different from the predetermined direction to push and pull the seat and the lower part of the back back and forth. In this case, there is an example in which the upper part of the back is associated with the fixed back part so as to be swingable so that the back can be tilted.

剛体の挙動をよりスムーズならしめるためには、剛体は、支持体に下方から係り合って上方に引き上げる上向面を有していることが好ましい。   In order to make the behavior of the rigid body smoother, the rigid body preferably has an upward surface that is engaged with the support body from below and pulled upward.

揺動動作や動力方向転換を一層円滑ならしめるためには、剛体は、一部を水平軸を介して作動体に回転可能に取り付けられ、他の一部を水平軸を介して座及び背の下部に回り得るように接続されていることが有効となる。 In order to make the swinging operation and the direction change of the power smoother, a rigid body is rotatably attached to the operating body through a horizontal shaft and the other part of the seat and back is mounted through the horizontal shaft. It is effective to be connected so as to be able to turn to the lower part.

以上説明した構成は、特に所定方向の動作がリニア方向の動作である場合に格別の効果を奏するものとなる。 The configuration described above has a special effect particularly when the operation in the predetermined direction is the operation in the linear direction.

本発明は、以上説明した構成であるから、１つのアクチュエータでも背座の昇降動作及びリクライニング動作を剛性を損なうことなくスムーズに実現することができ、背の後傾時にその上部が後方へ張り出すことも適切に回避できるようにした新規有用な椅子、あるいはこれに直接使用する部材駆動装置を提供することが可能となる。   Since the present invention has the configuration described above, even with a single actuator, the back-seat lifting and reclining operation can be smoothly realized without sacrificing rigidity, and the upper part projects backward when the back is tilted backward. In addition, it is possible to provide a new and useful chair that can appropriately avoid this problem, or a member driving device that is used directly therefor.

以下、本発明の一実施形態を、図面を参照して説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

この実施形態の椅子は、図１〜図４に示すように、固定背部１と、この固定背部１に沿って昇降可能な昇降部材２とを具備し、この昇降部材２に座３及び背４を支持させるとともに、固定背部１に作動体５１を有するアクチュエータ５を取り付け、その作動体５１に剛体６を介し背４及び座３を関連づけて、背４及び座３の昇降動作とリクライニング動作とを単一のアクチュエータ５によって実現するようにしている。 As shown in FIGS. 1 to 4, the chair of this embodiment includes a fixed back portion 1 and a lifting member 2 that can be lifted and lowered along the fixed back portion 1, and a seat 3 and a back 4. The actuator 5 having the actuating body 51 is attached to the fixed back 1 and the back 4 and the seat 3 are associated with the actuating body 51 via the rigid body 6 so that the back and forth movement and the reclining operation of the back 4 and the seat 3 are performed. This is realized by a single actuator 5.

具体的に説明すると、固定背部１は、床等に左右に対をなして配置されるベース部１１と、これらのベース部１１の間を接続する接続部１２と、この接続部１２より立ち上がる門方の基枠１３とを具備し、この基枠１３の上部１３ａと接続部１２の間にアクチュエータ５を構成するリニアガイド５２を配置して、このリニアガイド５２に沿って作動体５１が昇降駆動されるようにしている。作動体５１の側面には剛体６の上端部を取り付けるための取付穴５１ａが設けてある。図１及び図２において符合５３で示すものは作動体５１を駆動するモータである。 Specifically, the fixed back portion 1 includes a base portion 11 that is arranged in a pair on the floor and the like, a connection portion 12 that connects the base portions 11, and a gate that rises from the connection portion 12. The linear guide 52 which comprises the actuator 5 is arrange | positioned between the upper part 13a of this base frame 13, and the connection part 12, and the operation body 51 is driven to raise / lower along this linear guide 52 To be. An attachment hole 51 a for attaching the upper end portion of the rigid body 6 is provided on the side surface of the operating body 51. In FIG. 1 and FIG. 2, what is indicated by reference numeral 53 is a motor that drives the operating body 51.

昇降部材２は、固定背部１に沿って昇降可能な支持体７と、支持体７から前方へ突出する案内部８と、座３を取り付けた状態で前記案内部８に沿って前後スライド可能な移動体９とを備える。 The elevating member 2 is slidable back and forth along the guide 8 with the support 7 that can be raised and lowered along the fixed back 1, the guide 8 protruding forward from the support 7, and the seat 3 attached. A moving body 9 is provided.

支持体７は、固定背部１の基枠１３に対応する門形の背受枠からなるもので、左右の側枠部７１，７１間における所定高さ位置に横架材７２を架け設している。また、上枠部７３には、水平方向の軸孔７４ａを有するブラケット７４が取り付けてある。 The support body 7 is composed of a gate-shaped back support frame corresponding to the base frame 13 of the fixed back portion 1, and a horizontal member 72 is installed at a predetermined height position between the left and right side frame portions 71, 71. . A bracket 74 having a horizontal shaft hole 74a is attached to the upper frame portion 73.

案内部８は、固定背部１のベース部１１に沿って左右の側枠部８１を配置した座受枠からなるもので、この案内部８の座受枠は前記支持体７の背受枠とともにフレーム部材により一体的に構成されており、案内部８の左右の側枠部８１の内面に長手方向に沿ってレール溝８２を設け、このレール溝８２の後端側に後述する移動体９の脱落を防止するストッパー８３が設けられるようにしている。 The guide portion 8 includes a seat receiving frame in which left and right side frame portions 81 are arranged along the base portion 11 of the fixed back portion 1. The seat receiving frame of the guide portion 8 is formed by a frame member together with the back support frame of the support body 7. The rail groove 82 is formed in the inner surface of the left and right side frame portions 81 of the guide portion 8 along the longitudinal direction, and the moving body 9 described later is prevented from falling off at the rear end side of the rail groove 82. A stopper 83 is provided.

なお、支持体７の側枠部７１と案内部８の側枠部８１とのコーナー部には、これらの側枠部７１、８１に支持させて肘掛け１００を設けるようにしている。 Note that an armrest 100 is provided at a corner portion between the side frame portion 71 of the support 7 and the side frame portion 81 of the guide portion 8 so as to be supported by the side frame portions 71 and 81.

移動体９は、枠体状をなし、左右の側枠部９１の外面に水平軸回りにローラ９２を取り付けてなるもので、後枠部９３には水平方向の軸孔９４ａを有するブラケット９４が後方に突出させた状態で取り付けてある。 The moving body 9 has a frame shape, and has rollers 92 attached to the outer surfaces of the left and right side frame portions 91 around a horizontal axis. A bracket 94 having a horizontal axial hole 94a is formed in the rear frame portion 93. It is attached in a state of protruding backward.

一方、背４は背面上部にチャネル状のブラケット４１を後向きに取り付け、このブラケット４１の側面に長孔４１ａを開口させるとともに、背面下部に部分チャネル状のブラケット４２を後向きに取り付け、このブラケット４２の下端に水平方向の軸孔４２ａを開口させている。 On the other hand, the back 4 is attached with a channel-like bracket 41 rearwardly at the upper part of the back, an elongated hole 41a is opened on the side of the bracket 41, and a partial channel-like bracket 42 is attached rearwardly at the lower part of the backside. A horizontal shaft hole 42a is opened at the lower end.

剛体６は、上端部に水平方向の軸孔６ａを有し、この軸孔６ａを前記作動体５１の取付穴５１ａに水平軸ｖ１（図６〜図８参照）を介して回り得るように取り付けられるもので、上端部から屈曲して下方に延びる逆Ｌ字状をなし、その中間部に後方に角状に突出する突出部６１を有し、下端部に水平方向の軸孔６ｂを開口させている。 The rigid body 6 has a horizontal shaft hole 6a at the upper end, and the shaft hole 6a is attached to the attachment hole 51a of the operating body 51 so as to be able to rotate via a horizontal shaft v1 (see FIGS. 6 to 8). It has an inverted L-shape that bends from the upper end and extends downward, and has a protruding portion 61 that protrudes in a square shape at the rear at the middle, and a horizontal shaft hole 6b is opened at the lower end. ing.

そして、図５に示すように、案内部８のレール溝８２にその開口端から移動体９のローラ９２を挿入して当該移動体９を案内部８にスライド可能に支持させ、前述したストッパー８３（図３参照）により移動体９が案内部８から脱落することを防止するとともに、背４のブラケット４１の長孔４１ａ及び支持体２のブラケット７４の軸孔７４ａに軸ｖ２（図６〜図８参照）を挿し通して背４の上部を支持体２の上部に揺動可能に接続し、背４のブラケット４２の軸孔４２ａ、移動体９のブラケット９４の軸孔９４ａ及び剛体６の下端部の軸孔６ｂを合致させてこれらに共通の軸ｖ３を挿し通すことにより背４の下部及び移動体９の後部を剛体６の下端部に接続する。座３は上記作業の適宜の段階で移動体９の上面に固定する。 Then, as shown in FIG. 5, the roller 92 of the moving body 9 is inserted into the rail groove 82 of the guide portion 8 from the opening end thereof so that the movable body 9 is slidably supported on the guide portion 8, and the stopper 83 described above. (Refer to FIG. 3) The moving body 9 is prevented from falling off the guide portion 8, and the shaft v2 (FIGS. 6 to 6) is inserted into the long hole 41a of the bracket 41 of the back 4 and the shaft hole 74a of the bracket 74 of the support body 2. 8) and the upper part of the back 4 is connected to the upper part of the support 2 so as to be swingable, the shaft hole 42a of the bracket 42 of the back 4, the shaft hole 94a of the bracket 94 of the moving body 9, and the lower end of the rigid body 6 The lower part of the back 4 and the rear part of the moving body 9 are connected to the lower end part of the rigid body 6 by matching the shaft holes 6b of the parts and inserting a common shaft v3 therethrough. The seat 3 is fixed to the upper surface of the moving body 9 at an appropriate stage of the above operation.

以上により組立てられる本実施形態の椅子は、図７の状態からアクチュエータ５の作動体５１がリニアガイド５２に沿って上昇すると、剛体６の中間部に設けた突出部６１の上向面が支持体７の横架材７２に係り合って下方からこれを持ち上げると同時に、剛体６の下端部が軸ｖ３を介して移動体９を持ち上げ、この移動体９は案内部８にスライド可能に係り合っているため案内部８も持ち上げられ、結果的に昇降部材２全体が背４及び座３とともに固定背部１に沿って図７→図６に示すように上方に駆動される。 In the chair according to the present embodiment assembled as described above, when the operating body 51 of the actuator 5 rises along the linear guide 52 from the state of FIG. 7, the upward surface of the protrusion 61 provided at the intermediate portion of the rigid body 6 is the support body. The lower end of the rigid body 6 lifts the movable body 9 via the shaft v3, and the movable body 9 is slidably engaged with the guide portion 8 at the same time. Therefore, the guide portion 8 is also lifted, and as a result, the entire lifting member 2 is driven upward along with the back 4 and the seat 3 along the fixed back portion 1 as shown in FIGS.

一方、図６→図７のようにアクチュエータ５の作動体５１が降下すると、昇降部材２全体が背４及び座３とともに降下し、作動体５１が所定位置まで降下した際に昇降部材２の一部である案内部８に設けた図示しない移動体が固定背部１の接続部１２に予め設けた別異のストッパ１２ａ（図１参照）に突き当たってそれ以上の降下が禁止されるように構成してある。そして、昇降部材２が降下を停止した以降、引き続き作動体５１が降下を続けると、剛体６に上端部を中心とした側面視右回りのモーメントが生じるので、これにより剛体６は上端部を降下させつつ下端部を前方に揺動させる動作に切り替わって、移動体９の後部を背４の下部とともに前方に押し出す方向に移動させ、このとき中間部の突出部６１は支持体７の横架材７２から離反していく。そして、結果的に図７→図８のように座３が前動し、背４が上部を長孔４１ａ及び軸ｖ２を介して支持体７に係り合ったまま下部が前動することにより全体として後傾して、リクライニング姿勢をとることになる。 On the other hand, when the operating body 51 of the actuator 5 is lowered as shown in FIGS. 6 to 7, the entire lifting member 2 is lowered together with the back 4 and the seat 3, and one of the lifting members 2 is lowered when the operating body 51 is lowered to a predetermined position. The movable body (not shown) provided in the guide portion 8 which is a portion hits a different stopper 12a (see FIG. 1) provided in advance in the connection portion 12 of the fixed back portion 1 and is prevented from further lowering. It is. When the operating body 51 continues to descend after the elevating member 2 stops descending, a moment in the clockwise direction as viewed from the side centering on the upper end portion is generated in the rigid body 6, so that the rigid body 6 descends the upper end portion. The lower end portion of the movable body 9 is switched to the operation of swinging forward, and the rear portion of the movable body 9 is moved together with the lower portion of the back 4 in the direction of pushing forward. At this time, the projecting portion 61 of the intermediate portion is a horizontal member of the support body 7. Move away from 72. As a result, as shown in FIG. 7 → FIG. 8, the seat 3 moves forward, and the lower part moves forward while the spine 4 is engaged with the support 7 through the long hole 41a and the shaft v2. As you lean back and take a reclining posture.

さらに、図８→図７のように作動体５１が再び上昇すると、リクライニング姿勢から通常の姿勢まで座３が後動しかつ背４が起き上がった段階で再び図７→図６のように剛体６を介して背４及び座３が持ち上げられ、上昇動作が始まることとなる。 Further, when the operating body 51 is raised again as shown in FIG. 8 → FIG. 7, the rigid body 6 is again returned as shown in FIG. 7 → FIG. 6 again when the seat 3 is moved backward from the reclining posture to the normal posture and the back 4 is raised. As a result, the back 4 and the seat 3 are lifted, and the ascending operation is started.

以上のようにして、本実施形態の椅子は、固定背部１に設けられて所定の反復動作のみを行う作動体５１を有する単一のアクチュエータ５と、作動体５１に一部を取り付けられた剛体６とを具備し、この剛体６は、図７の作動体の位置を所定位置として作動体５１が図６〜図７のように前記所定位置よりも上方で動作する際は作動体５１とともに全体が所定方向に移動して背４及び座３を昇降駆動するが、作動体５１が所定位置を越えて図７〜図８のように降下する際は他の一部を前記所定方向とは異なる方向（前方）に揺動させて座３及び背４の下部を移動させ、これにより座３の前動と背４の後傾動作とが連動したリクライニング動作を行わせるようにしている。 As described above, the chair according to the present embodiment includes the single actuator 5 provided on the fixed back 1 and having the operating body 51 that performs only a predetermined repetitive motion, and the rigid body partially attached to the operating body 51. 6, the rigid body 6 is configured together with the operating body 51 when the operating body 51 operates above the predetermined position as shown in FIGS. 6 to 7 with the position of the operating body in FIG. 7 as a predetermined position. Moves in a predetermined direction to drive the back 4 and the seat 3 up and down. However, when the operating body 51 descends over a predetermined position as shown in FIGS. 7 to 8, other parts are different from the predetermined direction. The seat 3 and the lower portion of the back 4 are moved by swinging in the direction (forward), thereby performing a reclining operation in which the forward movement of the seat 3 and the backward tilting operation of the back 4 are interlocked.

このように、本実施形態によると単一のアクチュエータ６の単純な反復動作のみで背４及び座３の昇降動作及びリクライニング動作という２つの動作を実現できるので、複数のアクチュエータを用いる場合に比して、構造の簡素化及びコストダウンを有効に図ることができる。しかも、背４の上部を後方に移動させるのではなく、背４の下部を前方に移動させることによってリクライニング動作を実現するようにしているので、背４が後方に大きく張り出すことも回避することができる。その上、剛体６は作動体５１に駆動されて下端部を揺動させながら座３及び背４の下部を移動させるので、背の上部付近のみで背に後傾動作を引き起こしこれに座を連動させて前動させる構造に比して、作動体５１の動作で背４及び座３のリクライニング動作をスムーズに引き起こすことができ、これと同時に、軸ｖ１から軸ｖ３までのトルクアーム、あるいは軸ｖ１から突出部６１の上向面までのトルクアームを十分に大きくとって、局所的に過大なモーメントが作用することを有効に回避することが可能となる。 As described above, according to the present embodiment, the two operations of the back 4 and the seat 3 can be realized only by a simple repetitive operation of the single actuator 6 and the reclining operation can be realized. Thus, it is possible to effectively simplify the structure and reduce the cost. Moreover, since the reclining operation is realized by moving the lower part of the back 4 forward instead of moving the upper part of the back 4 backward, it is also possible to avoid the back 4 from protruding greatly backwards. Can do. In addition, since the rigid body 6 is driven by the operating body 51 and moves the lower portion of the seat 3 and the back 4 while swinging the lower end portion, the back body is tilted backward only in the vicinity of the upper portion of the back, and the seat is linked to this. Compared to the structure that moves forward, the operation body 51 can smoothly cause the reclining operation of the back 4 and the seat 3, and at the same time, the torque arm from the axis v1 to the axis v3, or the axis v1 It is possible to effectively avoid an excessively large moment acting by sufficiently increasing the torque arm from the upper surface to the upward surface of the protrusion 61.

具体的には、固定背部１に昇降部材２を介して座３及び背４を取り付けており、昇降部材２が、固定背部１に沿って昇降可能な支持体７と、支持体７から前方へ突出する案内部８と、座３を取り付けた状態で案内部８に沿って前後スライド可能な移動体９とを備え、作動体５１に一部を取り付けた剛体６の他の一部を移動体９並びに背４の下部に関連づけ、背４の上部を固定背部１に揺動可能に関連づけている。このように、剛体６の他の一部を移動体９に取り付け、この移動体９を案内部８に沿って移動させるようにしているので、剛体６の揺動動作ひいては座３の前動及び背４の後傾動作を一義的にスムーズに行わせることができ、その結果、所定方向に動作する作動体５１で背４及び座３のリクライニング動作を更に円滑に引き起こすことができる。 Specifically, the seat 3 and the back 4 are attached to the fixed back 1 via the lifting member 2, and the lifting member 2 can be moved up and down along the fixed back 1, and the support 7 forwards. A projecting guide portion 8 and a movable body 9 slidable back and forth along the guide portion 8 with the seat 3 attached, and another part of the rigid body 6 attached to the operating body 51 as a movable body. 9 and the lower part of the back 4, and the upper part of the back 4 is associated with the fixed back part 1 so as to be swingable. In this way, the other part of the rigid body 6 is attached to the moving body 9, and the moving body 9 is moved along the guide portion 8. Therefore, the swinging motion of the rigid body 6 and the forward movement of the seat 3 and The back tilting operation of the back 4 can be performed uniquely and smoothly, and as a result, the reclining operation of the back 4 and the seat 3 can be caused more smoothly by the operating body 51 operating in a predetermined direction.

また、剛体６は、作動体５１とともに所定方向に動作する際に２箇所で背４及び座３を支持し、揺動動作する際は一部（中間部）を背４及び座３から切り離して他の一部（下端部）を所定方向とは異なる方向すなわち前後方向に移動させて座３及び背４の下部を前後に押し引きするように構成している。このように、剛体６が２箇所で背４及び座３を支持することで、背４及び座３の昇降動作を安定して行わせることができ、荷重も２箇所に分散して各々の支持箇所における負担を有効に軽減することができる。また、揺動時に一部（中間部）を背４及び座３から切り離すことで、剛体６の大きな揺動動作を利用して座３及び背４の下部に対する無理のない移動動作を実現することができる。 Further, the rigid body 6 supports the back 4 and the seat 3 at two positions when operating in a predetermined direction together with the operating body 51, and a part (intermediate portion) is separated from the back 4 and the seat 3 when swinging. The other part (lower end) is moved in a direction different from the predetermined direction, that is, in the front-rear direction, and the lower portion of the seat 3 and the back 4 is pushed back and forth. In this way, the rigid body 6 supports the back 4 and the seat 3 at two places, so that the back and forth movement of the back 4 and the seat 3 can be stably performed, and the load is also distributed at two places to support each of them. The burden at the location can be effectively reduced. Further, by separating a part (intermediate part) from the back 4 and the seat 3 at the time of swinging, it is possible to realize an unreasonable moving operation with respect to the lower portion of the seat 3 and the back 4 by utilizing a large swinging motion of the rigid body 6. Can do.

より具体的には、剛体６は、作動体５１とともに所定方向に動作する際は中間部で昇降部材２の支持体７に係り合うとともに下端部を移動体９並びに背４の下部に接続されて背４及び座３を２箇所で支持し、揺動動作する際は中間部を昇降部材２の支持体７から切り離して下端部を所定方向とは異なる前後方向に移動させることにより、座３及び背４の下部を前後に押し引きし、その際背４の上部が固定背部１に揺動可能に接続されていることにより背４を傾動させ得るように構成しているので、剛体６による支持体７の引き上げ動作と、剛体６の支持体７からの切り離し動作とを有効に実現することができる。 More specifically, when the rigid body 6 moves in a predetermined direction together with the operating body 51, the rigid body 6 is engaged with the support body 7 of the elevating member 2 at an intermediate portion, and the lower end portion is connected to the lower portion of the moving body 9 and the back 4. When the back 4 and the seat 3 are supported at two locations and the swinging operation is performed, the intermediate portion is separated from the support 7 of the elevating member 2 and the lower end portion is moved in the front-rear direction different from the predetermined direction. Since the lower part of the back 4 is pushed back and forth, and the upper part of the back 4 is swingably connected to the fixed back part 1 so that the back 4 can be tilted, it is supported by the rigid body 6. The pulling-up operation of the body 7 and the separating operation of the rigid body 6 from the support body 7 can be effectively realized.

とりわけ、剛体６が、支持体７の横架材７２に下方から係り合って上方に引き上げる上向面を有しており、この剛体６の上向面で支持体７を持ち上げるようにしているので、作動体５１が降下した際の剛体６のスムーズな切り離し動作を有効に担保することができる。 In particular, the rigid body 6 has an upward surface that is engaged with the horizontal member 72 of the support body 7 from below and pulled upward, and the support body 7 is lifted by the upward surface of the rigid body 6. The smooth separating operation of the rigid body 6 when the operating body 51 is lowered can be effectively ensured.

さらに、剛体６は、一部を水平軸ｖ１を介して作動体５１に回転可能に取り付けられ、他の一部を水平軸ｖ３を介して座３及び背４の下部に回り得るように接続されているため、揺動動作を一層円滑ならしめ、作動体５１から受け取る駆動力の方向転換もよりスムーズに行わせることができる。 Further, the rigid body 6 is rotatably attached to a part of the working body 51 via a horizontal axis v1 and connected to the lower part of the seat 3 and the back 4 via the horizontal axis v3. Therefore, the swinging operation can be made smoother, and the direction of the driving force received from the operating body 51 can be changed more smoothly.

特に、この実施形態の作動体５１はリニア方向に動作するものであり、座３及び背４の下部にリクライニング動作のためにこれと交叉する方向の動作を引き起こす必要があるのであるが、上記のような剛体６の揺動動作を利用することにより、極めて適切な動作方向の切替機能を発揮することができる。 In particular, the operating body 51 of this embodiment operates in a linear direction, and it is necessary to cause an operation in a direction intersecting with the lower portion of the seat 3 and the back 4 for the reclining operation. By utilizing such a swinging motion of the rigid body 6, it is possible to exhibit a very appropriate switching function of the operation direction.

以上、本発明の一実施形態について説明したが、各部の具体的な構成は図示例のみに限定されるものではなく、本発明の趣旨を逸脱しない範囲で種々変形が可能である。 As mentioned above, although one Embodiment of this invention was described, the specific structure of each part is not limited only to the example of illustration, A various deformation | transformation is possible in the range which does not deviate from the meaning of this invention.

また、上記に組み込まれている部材駆動装置を利用すれば、椅子の昇降及びリクライニング動作以外の駆動にも同部材駆動装置を有効に適用することが可能である。 Further, if the member driving device incorporated above is used, the member driving device can be effectively applied to driving other than raising and lowering of the chair and reclining operation.

すなわち、固定背部１のような固定部に設けられて所定の反復動作のみを行う作動体５１を有する単一のアクチュエータ５と、作動体５１に一部を取り付けられた剛体６とを具備し、この剛体６は、作動体５１が所定範囲内で動作する際は作動体５１とともに所定方向に動作して背４の下部や座３の後部のごとき駆動対象部を前記所定方向に駆動し、作動体５１が所定範囲を越えて動作する際は他の一部を前記所定方向とは異なる方向に揺動させて背４の下部や座３の後部のごとき駆動対象部を同方向に駆動するといった上記実施形態と同様の利用態様が可能になり、単一のアクチュエータ５で２つの動作を有効に実現できる効果が奏される。 That is, it comprises a single actuator 5 having an operating body 51 that is provided in a fixed portion such as the fixed back 1 and performs only a predetermined repetitive motion, and a rigid body 6 that is partially attached to the operating body 51, The rigid body 6 operates in a predetermined direction together with the operating body 51 when the operating body 51 operates within a predetermined range, and drives a drive target part such as the lower part of the back 4 or the rear part of the seat 3 in the predetermined direction. When the body 51 moves beyond a predetermined range, the other part is swung in a direction different from the predetermined direction, and the drive target part such as the lower part of the back 4 or the rear part of the seat 3 is driven in the same direction. The use mode similar to that of the above-described embodiment is possible, and an effect that two operations can be effectively realized by a single actuator 5 is achieved.

より具体的には、略Ｌ字状に配置される背４や座３のごとき２つの駆動対象物の最寄の一端側を駆動対象部となし、一方の駆動対象物（上記実施形態では背４）は所定方向に沿って固定背部１のような固定部に移動可能に設けた支持部７に他端側を揺動可能に関連づけられ、他方の駆動対象物（上記実施形態では座３）は前記所定方向と交叉する方向に沿って支持部７に移動可能に設けられて、所定範囲内では背４及び座３が一体となって昇降する場合のように２つの駆動対象物は所定のＬ字状を保って昇降動作し、所定範囲を超えて動作する際は背４及び座３がリクライニング動作をする際のようにＬ字の角度を拡縮させながら前記交叉する方向に進退するように駆動することができるので、上記実施形態と同様、より複雑な動作を単一のアクチュエータ５によって有効に実現することが可能となる。 More specifically, the nearest one end side of two driving objects such as the back 4 and the seat 3 arranged in a substantially L shape is a driving object portion, and one driving object (in the above embodiment, the back object is the back). 4) is associated with a support portion 7 movably provided at a fixed portion such as the fixed back portion 1 along a predetermined direction so that the other end can be swung, and the other drive object (seat 3 in the above embodiment). Is provided so as to be movable to the support portion 7 along the direction intersecting the predetermined direction, and within the predetermined range, the two driving objects are in a predetermined range as in the case where the back 4 and the seat 3 are moved up and down together. While moving up and down while maintaining an L shape, when moving beyond a predetermined range, the back 4 and the seat 3 are advanced and retracted in the crossing direction while expanding and contracting the angle of the L shape as in a reclining operation. As in the above embodiment, a more complex operation can It is possible to effectively realize the actuator 5.

本発明の一実施形態を示す前方斜視図。The front perspective view showing one embodiment of the present invention. 同実施形態の後方斜視図。The rear perspective view of the embodiment. 同実施形態の分解斜視図。The exploded perspective view of the embodiment. 同実施形態の分解側面図。The exploded side view of the embodiment. 同実施形態の案内部及び移動体の関係を示す平面図。The top view which shows the relationship between the guide part of the same embodiment, and a mobile body. 同実施形態の作用説明図。Action | operation explanatory drawing of the same embodiment. 同実施形態の作用説明図。Action | operation explanatory drawing of the same embodiment. 同実施形態の作用説明図。Action | operation explanatory drawing of the same embodiment.

符号の説明Explanation of symbols

１…固定背部
２…昇降部材
３…座
４…背
５…アクチュエータ
６…剛体
７…支持体
８…案内部
９…移動体
５１…作動体
ｖ１、ｖ２、ｖ３…水平軸

DESCRIPTION OF SYMBOLS 1 ... Fixed back part 2 ... Elevating member 3 ... Seat 4 ... Back 5 ... Actuator 6 ... Rigid body 7 ... Supporting body 8 ... Guide part 9 ... Moving body 51 ... Actuator v1, v2, v3 ... Horizontal axis

Claims (6)

固定背部に設けられて所定の反復動作のみを行う作動体を有する単一のアクチュエータと、前記作動体に一部を取り付けられた剛体とを具備してなり、この剛体は、作動体が所定位置よりも上方で動作する際は作動体とともに全体が所定方向に移動して背座を昇降駆動し、作動体が所定位置を越えて降下する際は他の一部を前記所定方向とは異なる方向に揺動させつつ座及び背の下部を移動させ、これにより座の前動と背の後傾動作とが連動したリクライニング動作を行わせるようにした椅子であって、
前記固定背部に昇降部材を介して座及び背を取り付け、前記昇降部材が、固定背部に沿って昇降可能な支持体と、支持体から前方へ突出する案内部と、座を取り付けた状態で前記案内部に沿って前後スライド可能な移動体とを備え、作動体に一部を取り付けた剛体の他の一部を移動体若しくは座並びに背の下部に関連づけ、背の上部を前記固定背部に揺動可能に関連づけていることを特徴とする椅子。 The actuator comprises a single actuator having an operating body that is provided on a fixed back and performs only a predetermined repetitive motion, and a rigid body that is partially attached to the operating body. When moving above the predetermined position, the entire body moves together with the operating body in a predetermined direction to drive the back seat up and down, and when the operating body descends beyond a predetermined position, another part is different from the predetermined direction. The seat and the lower part of the back are moved while swinging, so that the reclining motion in which the forward movement of the seat and the backward tilting motion of the seat are linked is performed ,
A seat and a back are attached to the fixed back via an elevating member, and the elevating member is supported with a support that can be raised and lowered along the fixed back, a guide that protrudes forward from the support, and a seat attached thereto. A movable body that is slidable back and forth along the guide part, and another part of the rigid body attached to the operating body is associated with the movable body or the seat and the lower back part, and the upper part of the back is rocked to the fixed back part. A chair characterized by being associated with movement . 剛体は、作動体とともに所定方向に動作する際は２箇所で背座を支持し、揺動動作する際は一部を背座から切り離し他の一部を前記所定方向とは異なる方向に移動させて座及び背の下部を前後に押し引きするように構成してある請求項１記載の椅子。 The rigid body supports the back seat at two locations when operating in the predetermined direction together with the operating body, and when swinging, part of the rigid body is separated from the back seat and the other part is moved in a direction different from the predetermined direction. The chair according to claim 1 , wherein the chair and the lower part of the back are pushed and pulled back and forth. 剛体は、作動体とともに所定方向に動作する際は中間部で昇降部材の支持体に係り合うとともに下端部を移動体若しくは座並びに背の下部に接続されて背座を２箇所で支持し、揺動動作する際は中間部を昇降部材の支持体から切り離して下端部を前記所定方向とは異なる方向に移動させることにより、座及び背の下部を前後に押し引きし、その際背の上部が固定背部に揺動可能に関連づけられていることにより背を傾動させ得るように構成している請求項１記載の椅子。 When the rigid body moves in a predetermined direction together with the actuating body, it engages with the support member of the elevating member at the middle part, and the lower end part is connected to the moving body or the seat and the lower part of the back to support the back seat at two places. When moving, the intermediate part is separated from the support member of the elevating member and the lower end part is moved in a direction different from the predetermined direction, so that the seat and the lower part of the back are pushed back and forth. The chair according to claim 1 , wherein the chair can be tilted by being associated with the fixed back so as to be swingable. 剛体は、支持体に下方から係り合って上方に引き上げる上向面を有している請求項１〜３の何れかに記載の椅子。 The chair according to any one of claims 1 to 3, wherein the rigid body has an upward surface that is engaged with the support body from below and pulled upward. 剛体は、一部を水平軸を介して作動体に回転可能に取り付けられ、他の一部を水平軸を介して座及び背の下部に回り得るように接続されている請求項１〜４の何れかに記載の椅子。 The rigid body is rotatably attached to a part of the working body through a horizontal axis and connected to the lower part of the seat and the lower part of the rigid body through the horizontal axis . A chair according to any one of the above. 所定方向の動作がリニア方向の動作である請求項１〜５の何れかに記載の椅子。 The chair according to any one of claims 1 to 5, wherein the motion in the predetermined direction is a motion in the linear direction.

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